Title :
Acoustic energy shifting in transformer oil at different temperatures
Author :
Wang, Xiaodong ; Li, Baoqing ; Xiao, Zhixiong ; Russo, Onofrio L. ; Roman, Harry T. ; Chin, Ken ; Farmer, Kenneth R.
Author_Institution :
New Jersey Inst. of Technol., Newark, NJ, USA
fDate :
7/1/2005 12:00:00 AM
Abstract :
In this letter, partial discharge (PD) acoustic waves for different temperatures have been detected using a piezoelectric acoustic sensor. The experiments results are analyzed using the Fast Fourier Transform (FFT). Calculations are shown to agree with the experimental results. This acoustic energy (AE) analysis appears to be an effective method to monitor the temperature of the transformer oil.
Keywords :
acoustic transducers; fast Fourier transforms; partial discharges; piezoelectric transducers; power transformer insulation; transformer oil; acoustic energy shifting; fast Fourier transform; partial discharge acoustic waves; piezoelectric acoustic sensor; temperature monitoring; transformer oil; Acoustic sensors; Acoustic signal detection; Acoustic waves; Electrodes; Frequency; Oil insulation; Partial discharges; Petroleum; Temperature sensors; Viscosity; Energy shifting; partial discharge (PD); temperature;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2005.844238
